Typewriting machine



March 29, 1927.

G. G. GOING TYPEWRITING MACHINE Filed Aug. 28. 1925 ATTORNEY WITNESSES flaw.

Patented Mar. 29, 1927.

UNITED STATES PATENT OFFICE.

GEORGE G. GOING, OF MIDDLETO\VN, CONNECTICUT, ASSIGNOR TO REMINGTON NOISE- LESS TYPEWRITER CORPORATION, OF NEW YORK, N. Y., A. CORPORATION OF NEW YORK.

TYPEWRITING MACHINE.

Application filed August 28, 1925.

My invention relates to typewriting or like machines, and more particularly to card clamps by which a card or like oomparatively stiff or heavy work sheet may be held snugagainst the face of the platen as it is being fed with the platen, as the latter is rotated.

The main object of the invention is to provide a simple yet highly efficient card clamp and attaching means therefor, of such a character that the card clamp may be readily attached to the platen for use in feeding cards and when detached from the platen leaves the latter in condition for ordinary use.

A further and important object of my invention is to provide a card clamp and fastening means therefor of the character specified which enables the card clamps to be readily applied to existing platens without reconstructing, altering, or mutilating such platens, or other features of the machines 111 which they are contained.

To the above and other ends which will hereinafter appear, my invention consists in the features of construction, combinations of devices, and arrangement of parts set forth in the following description and particularly pointed out in the claims.

In the accompanying drawings wherein like reference characters indicate correspond ing parts in the different views,

Figure 1 is a front view of a platen shown equipped with card clamping devices of my invention.

Figure 2 is an enlarged transverse sectional view of the same taken on the line 2- 2 of Figure 1 and looking in the direction of the arrows at said line.

Figure 3 is an enlarged transverse sectional view of the same taken on the line 33 of Figure 1 and looking in the direction of the arrows at said line.

Figure 4 is a fragmentary detail sectional view taken through the card clamp and fastening means therefor at the left-hand end of the platen, the section being taken on the line 44i of Fig. 2 and looking in the direction of the arrows at said line.

Figure 5 is a corresponding fragmentary sectional View taken through the fastening means at the right-hand end of the platen,

the section being taken on the line 5-=-5 of Serial No. 53,101.

Fig. 3 and looking in the direction of the arrows at said line.

I have shown my invention in the present instance in connection with a platen of a Remington-Noiseless No. 6 machine, which also is similar to that employed in the No. 5 Noiseless machine. In both instances the platen is made throughout of metal, and is closed at its ends by permanently secured end plates or heads which are flush with the ends of the cylindrical body. These platens do not readily lend themselves to the attachment thereto of card clamps or attaching means therefor heretofore in use. For several reasons it is desirable not to provide a special platen, nor to change, modify or mutilate the existing platens in order to'provide attaching means for detachably connecting a card clamp thereto. This iscespecially true in platens such as those above referred to, although it also is true of platens generally. Among other reasons it would be diflicult, if not impossible, for a mechanic in the field to effect such modification of the platen as might be necessary to equip the platen with such attaching means. o

By my present invention, I provide simple and highly eflicient means by which an existing platen of either of the machines mentioned may be readily equipped with a card clamp and its means for readily and firmly attaching it to or detaching it from the platen, without making any changes in the existing structures of the platens. While I have shown the invention in connection with platens of the machines mentioned, it will be understood that the advantages stated above are alike applicable to other typewriting and like machines and that the devices of my invention are of general application.

The main cylindrical metal body 1 of the platen is permanently closed at its ends by platen heads 2 and 3 which are flush with the ends of the platen. The platen at its left-hand end carries an outwardly projecting hollow spindle 4 fixed to the platen, whereas a solid spindle 5 projects outwardly from and is fixed to the platen at its righthand end. A card clamp carrier or support, designated as a whole by the reference numeral 6, is detaehably' secured to the 5 does not effect such limit of movement. The interlocking connecting means just described between the two catches, and which include the tooth 34, compel both catches to move together into and out of effective position. It follows, therefore, that in releasing the catches from engagement with the card clamp it is merely necessary to move either catch and the other will receive a corresponding movement, thereby facilitating the disengagement of the catches .irom the clamp with one hand.

It will be seen that the member 22 of the right-hand carrier is formed with a radially disposed outwardly projecting finger or guide 37 that is situated out of the lane of the catches 27 and 28 but midway etween the two. This finger, when the clamp is in place, is adapted to be received in a space 38 between two outwardly extending lugs 39 on an car 40 that projects from one end of the card clamp at substantially right angles to the plane thereof. This centers the lugs 39 between the two catches and interlocking connection prevents the clamp 15 from moving around the periphery of the platen, whereas the bills 32 of the catches are adapted to engage over the lugs 39, and positively lock and firmly hold the clamp against the face of the platen at this end thereof.

The catch carrying members 22 and 23,

like the carrier 6 at the opposite end of the platen, is detachably connected to the platen by means similar to those previously described. Thus, each of the members 22 and 23 is provided with an outwardly extending perforated car 41. A screw bolt 42 passes through the aligned openings in said ears and has a nut 43 on the threaded end thereof. By tightening the screw bolt 42 the members 22 and 23 may be drawn together and firmly clamped on the right-hand spindle 5, thus connecting the carrier for the catches to the platen. By removing the bolts 11 and 42 the carriers for detachably connecting the card clamp to the platen may be readily removed. It will be seen that by the use of the de tachable carriers described above, it is unnecessary to nu'itilate, modity, tap, or in any manner change standard platens in order to apply the card clamp and its fastening means thereto or to remove such parts therefrom. When the card clamp is removed from the platen, it remains a standard platen for ordinary use.

When the card clamp is moved into efiective position around its hinged end the outer side edges of the lugs 39 will coact with the bevel faces 33 of the catches while the inner edges of the lugs coacting with the finger 37 will direct the free end of the clamp to proper position. The action of the lugs 39 on the bevels 33 will force the catches away from each other against the power of the spring 31 until the lugs pass the bills 32 of the catches, when the latter under the action of the spring 31 will snap over the lugs into locking position and firmly and positively hold the clamp in position on the platen.

The sclf-acting spring-closed catches or fastening devices materially aid in quickly attaching the clamp to the platen, and the shifting of either catch to releasing position releases both catches. \Vhen thus released, the clamp may be turned on its hinge to a position at substantially right angles to the axis of the platen. In this position, the hinge member on the clamp may be detached from the hinge member on the carrier 6 and the clamp may be removed.

It will be seen that I have provided simple and etiicient means whereby a card clamp and its attaching means may be readily applied to a platen without reconstructing,

'modifyi'ng, tapping, drilling or altering the platen in any manner and that after the attaching means are once applied the clamp may be quickly attached or detached, and when attached is eifectively held on the platen.

lVhat I claim as new and desire to secure by Letters Patent is 1. In a typewriting or like machine, the combination of a platen, a card clamp substantially coextensive withthe length of the platen, and means for detachably connecting said card clamp to the face of the platen, said means comprising a locking projection on said clamp outwardly extending beyond one end of the platen when the clamp is in place, and two oppositely disposed springpressed catches carried by the platen and which are self-locking and positively engage said locking projection when the clamp is moved to effective posit-ion on the platen and positively prevent the detachment of the card clamp from the platen until said catches are hand released.

2. In a typewriting or like machine, the combination of a platen, a card clamp substantially coextensive with the length of the platen, .means for detachably connecting said card clamp to the face of the platen, said means comprising two detachably con nective hinge members for hinging the lltl clamp at one end of the platen, one of said members being formed from an integral car on said clamp, a locking projection on the opposite end of the clamp, and a spring actuated self-locking catch that positively engages saidlocking projection when the clamp is moved to effective position on the platen and positively prevents the detachment of the card clamp until said catch is hand released.

3. In a typewriting or like machine, the combination of a platen, a card clamp sub-. stantially coextensive withthe length of the platen, means; for detachably. connecting said' card clamp tov the face of the platen, said means: comprising a locking member on the sand clamp, two self-locking catches which coact with said locking memberaud positively engage it on opposite sides when the clamp is moved to efi'ective position on the platenand-positivelyprevent the detachment of thecard clamp fromthe platen until,

tached from the platen. at opposite ends thereof without altering ormutilating the platen, engaging means carried-by each of said Supporting members, and; connecting means at opposite ends of the card clamp which. coact with said engaging means to positively though detachably connect the card clamp to said supporting members and pos tively hold the card clamp against the face of the; platen.

5'. In: a typewriting or like machine, the combination of a platema card clamp substantially coextensive with the length of the platen, means fordetachably connecting-said card clamp to, the face of the platen, said means comprising a supporting device madeup of two relatively movable members having means; for drawingthem together fordetaohably: connecting the supporting device to the platen at one end thereof without altering or mutilating; the platen, engaging means carried by said: supporting device,

and engaging means carried by said card clampat one end thereof and co-operative WltlLt-lle engaging means on,sa1d supporting device to a d in. positively though detachably connecting said. card clampv to the platen.

6. in a typewriting O1" likmmachine, the combination of a platen, a, raid clampsubsta-ntially coextensive with thelength of the platen, means for detachably connecting said card clamp'to. theface of, the platen, said means comprising a supporting device made up of. two relatively movable members having; means for drawing them together for detachably connecting the supportingdeviee to the platen at one endthereof without altering or mutilating the platen, two;

spring actuated locking catches pivoted on sa d; suppontmgdev ce, engaglng means on said car-d clampthat is positively engaged 1 by said catches whengthecard clamp-is posi- 1 can, can

tioned: on the-platemand means for detachablyconnecting the other end of the card clamp to. the plateni.

7. In a typewriting or likemachine the combination of? a platen havinga spindle,

a card clamp, and; means forv detachably connecting said card; clamp to and; positively holding itagainst the face Oil the: platen, said means comprising at supporting device having means for-rigidly and fi'rmlythough detachably clampingthc' supporting device directly to saidspindle to turntherewith without altering or mutilating the platen, a fastening device carried by said supporting device, and; companion interlocking means carried by. the card; clamp to aid. in positively though detachably connecting. the card: clamp to said supporting device.

8. In a typcwriting or like machine the' combination of platen having a: spindle projecting from both ends thereof, a card: clamp, and means for detachably connecting said card clamp to the platenwit-hout altering or inutilating the platen, said means comprising two carriers having means for detachably clamping them on said spindles nean the ends of the platen, a detachable hinge, one member: of which is carried by one of; said carriers and the, othen member of= which is ca-i'nied' by the card clamp atone end thereof, and means for positively though-z detachably connecting the other end, of the card clamp to the other carrier including a catch springactuated; to locking; position when the clampis moved; on its hinge tot eflectivaposition against. the platen and:

positively engaginga companion engagmg;

member to hold the clamp in place.

9. In a typewriting; or likemachine, the combination, of? a platen haying; a: spindle projecting from bothv ends of theplaten, a; card clamp, and; means for detachably connecting saifd card clamp tothe platenwithout. altering ormutilating the platen, said means comprising two; carriers detachably mounted; on said spindle and each made of.-

two parts pivoted together-and connected. by a screw by which the parts may be drawn togetherto clamp thecarr-ieron its spindle, and means for dotachably connecting each end of said card clamp to. one of said carriers.

10. In atypewriling or like machine, the combination of a platen having a spindle projecting from both ends of. the platen, a card clamp, and means for detachably con necting said card, clamp to the platen without altering or mutilating the platen, said means comprising; two cariziers detachably. mounted on said spindleand each made'of two parts pivotedtogethen and. connected by a-screw by whi h the par-ts may be drawn together to clamp the'car-rier on,its spindle, one-partofa detachable hingebeing carried by one of said, carriers, the other partaof.

said hinge being formed from the card clamp at one end thereof, a pair of springclosed catches carried by the other of said carriers, and an engaging projection on the card clamp at one end thereof with which said spring catches are adapted to engage.

11. In a typewriting or like machine, the combination of a platen having a spindle projecting from both ends of the platen, a card clamp, and means for detachably connecting said card clamp to the platen Without altering or mutilating the platen, said means comprising two carriers detachably mounted on said spindle and each made of two parts pivoted together and connected by a screw by which the parts may be drawn together, to clamp the carrier on its spindle, one part of a detachable hinge carried by one of said carriers, the other part of said hinge being formed from the card clamp at one end thereof, a pair of spring-closed catches carried by the other of said carriers, a bifurcated engaging projection on said card clamp with each arm of which one of said catches is adapted to positively engage when the card clamp is turned on its hinge against the platen, and a projection on the companion carrier which is received between the arms of said bifurcated engaging projection when the clamp is in place.

12. In a typewriting or like machine, the combination of a platen having a spindle projecting from one end thereof, a card clamp, and means for detachably connecting said card clamp to the platen comprising a carrier made of two parts pivoted together and connected by a screw by which the parts may be drawn together to detachably clamp and firmly hold said carrier on said spindle, two oppositely disposed spring-closed catches pivoted on said carrier and having beveled faces, and an engaging member on said card clamp which when the clamp is moved into effective position on the platen coacts with said beveled faces and causes the catches to positively engage said engaging member and hold the clamp against the platen.

13. In a typewriting or like machine, the combination of a platen having a spindle projecting from one end thereof, a card clamp, and means for detachably connecting the card clamp to the platen comprising a carrier detachably connected to the spindle at one end of the platen, a pair of springactuated catches pivoted on said carrier, intermediate controlling connections between said catches by which a movement of one of the catches away from locking position causes a corresponding movement of the other catch, and an engaging member on said clamp adapted to be positively engaged by said catches to hold the card clamp against the platen.

14. In a typewriting or like machine, the combination of a platen having a spindle projecting from each end thereof, a card clamp, and means for detachably connecting the card clamp to the platen comprising a carrier detachably connected to the spindle at one end of the platen, a pair of spring actuated catches pivoted on said carrier, intermediate controlling connections between said catches by which a movement of one of the catches away from locking position causes a corresponding movement of the other catch, an engaging member on said clamp adapted to be positively engaged by said catches to hold the card clamp against the platen, a like carrier detachably connected to the spindle at the other end of the platen, one member of a detachable hinge connection carried by said last mentioned carrier, and a second member of said hinge carried by said card clamp.

Signed at Middletown, in the county of Middlesex and State of Connecticut this 26th day of August, A. D., 1925.

GEORGE G. GOING. 

